Hair accessory



FIG. 1 is a front, left side perspective view of a hair accessory showing the new design;

FIG. 2 is a front, left side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a left side thereof, a right side view is a mirror image thereof.

The broken lines in the drawings depict portions of the hair accessory that do not form a part of the claimed design. 

CLAIM The ornamental design for a hair accessory, as shown and described. 